Steinhaus Longimeter

Steinhaus Longimeter Review / HowTo
Chris Staecker

Reminds me of the old mechanical gun computers and their techniques for measuring the lengths of curves.

YouTube blurb: "The Steinhaus Longimeter, invented in the 1930s by Hugo Steinhaus."

Wikipedia has a page about The Scottish Book, and copies are available from a variety of shops.

Update April 2024 fixed video embed code